Asus PRL-DLS - Manual (Page 37)

ASUS PRL-DLS motherboard user guide 2-9
The system chipset only supports PC2100/1600 registered ECC
DIMMs. Make sure to use only the specified DIMM types for stable
system operation.
2.5.2 Memory Configurations
The motherboard supports system memory of up to 4GB in a one-way
non-interleaved configuration. As a rule, this configuration requires that
you install identical DDR DIMMs (exactly the same type and size) in pairs.
For example, if you installed a 512MB module into DDRA1, you must
install the same type of 512MB module into DDRA2. The same rule
applies to pairs DDRB1/DDRB2 and DDRC1/DDRC2.
Memory configuration table
DIMM Socket 184-pin ECC DDR DIMM Total Memory
DDRA1 SDRAM 128MB, 256MB, 512MB, 1GB, 2GB (x1) =
DDRA2 SDRAM 128MB, 256MB, 512MB, 1GB, 2GB (x1) =
DDRB1 SDRAM 128MB, 256MB, 512MB, 1GB, 2GB (x1) =
DDRB2 SDRAM 128MB, 256MB, 512MB, 1GB, 2GB (x1) =
Total System Memory (Max. 4GB) =